Exhaust manifold support pipe clamp



April 9 R. I. MARKEY 2,279,090-

EXI'IAUSI MANIFOLD SUPPORT PIPE CLAMP Filed July 25, 1940 INVENTOR.Rosco e Z'. Mair/8] ATTORNEY.

Patented Apr. 7, 1942 EXHAUST MANIFOLD SUPPORT PIPE CLAMP Roscoe I.Markey, East Orange, N. J., assignor to Pollak Manufacturing Company,Arlington, N. 5., a corporation of New Jersey Application July 25, 1940,Serial N0. 347,375

3 Claims.

The invention relates to exhaust manifold support pipe clamps and isparticularly adapted for use in connection with exhaust manifold systemsfor aircraft engines.

In such systems it is often desirable to clamp or rigidly secureassociated parts to the system. The manifold system being placed inclose proximity to the engine there is considerable expansion andcontraction in the entire system due to the great heat developed by theengine While in operation. It is therefore impossible or highlyimpractical to provide a rigid clamp.

The principal object of the present invention is to provide a supportpipe clamp that will efficiently serve in such exhaust manifold system.

Another object of the invention is to provide an exhaust manifoldsupport pipe clamp which is extremely simple in construction thuslending itself to economy of manufacture and ease of installation.

Other objects and advantages will appear as this specification proceeds.Referring to the drawing forming a part thereof and in which preferredembodiments of the invention are illustrated:

Fig. 1 is an edge view of the clamp, the pipe being in section;

Fig. 2 is a side elevation;

Figs. 3 and 4 are an edge view and side elevation, respectively, of aslightly modified form of the invention; and

Figs. 5 and 6 are an edge view and side elevation, respectively, ofanother modification.

The principle involved in the present invention is similar to that of mycopending application, Serial No. 296,799, filed September 2'7, 1939,and allowed June 12, 1940 now Patent No. 2,226,936, dated December 31,1940.

Referring again to the drawing and particularly to Figs. 1 and 2 thereference numeral l0 designates a fragmentary part of some member of anexhaust manifold system to which it is desired to clamp an associatedpart or element. The clamp comprises a split band ll preferably formedof a continuous strip of metal.

At one end the strip is bent back on itself so as to form an eye l2.Rotatably mounted in the eye I2 is a pin l3 which has an enlargedportion I4 confined in a slot IS. The enlarged portion l4 prevents anyendwise movement of the pin and is threaded for the reception of aT-shaped hinge member I 6. The cross portion of the T-shaped member isdrilled out to receive the ends of a resilient ring-like locking memberl1.

wise secured to the band on the opposite side of the gap. The lockinglug is provided with a pair of ears l9, l9 and an undercut portion forthe reception of the locking ring. The resilient locking ring has anoffset portion substantially the width of the locking lug. Thus when theresilient locking ring is sprung under the ears, I 9 it cannot bedisplaced laterally and due to the shape and resiliency of the lockingmember the clamping band may readily expand or contract and yet at alltimes be firmly and rigidly locked in position. Having the T-shapedmember threaded into the pin l3 permits of adjustments for differentdiameters of pipe.

The shape of the block l8 and its locking ears !9 permit of a suitabletool being applied to lock or unlock the clamp. This tool has a curvedend and in locking the clamp it is slipped under the ring and into theopening between the ears. The ring then readily rides over the tool intoits locked position. In opening the clamp the tool is reversed and thering is easily and quickly moved from under the ears to its releasedposition.

The strip ll continues on from the formation of the eye l2 and isresistance welded to itself at 2| and 22. Between the two layers of thestrip and the resistance welds 2| and 22 is the fiat head 23 of athreaded stud 24, the stud projecting through an aperture in the outerlayer of the strip. The stud is thus firmly secured to the clamp in asimple manner and may be used for supporting or carrying any desiredassociated part.

The ends of the resilient locking ring I! abut each other in the crossportion of the T-shaped hinge member l6 and are ground or chamfered asindicated at 26 in Fig. 2. After assembly an indentation or dimple 21 isformed in the cross portion and this indentation engages what might betermed the groove formed by the chamfered abutting ends and accidentaldisassembly or displacement of the locking ring I! is prevented.

The modification shown in Figs. 3 and 4 is quite similar to the form ofFig. 1 and like parts bear like reference numerals. In this form thatpart of the strip which is bent over on itself to form the eye I2terminates beyond the eye and the support attachment is of somewhatdifferent nature and is resistance welded to the clamp.

In the modification illustrated in Figs. 5 and 6 a hot air duct 30 isclamped to the exhaust manifold number ID. The clamp 3| might extend allaround the hot air duct or as illustrated be formed of two pieces havingtheir ends resistance welded to the hot air duct as indicated at 32. Inboth modifications the resilient locking mechanism is the same as thatdescribed in connection with Figs. 1 and 2.

Such changes in details of construction and arrangements of parts aswould occur to one skilled in the art are to be considered as comingwithin the spirit of the invention as set forth in the appended claims.

I claim:

1. An exhaust manifold support pipe clampa resilient-ring-like locking,member hinged in said hinge piece, said locking member engaging alocking lug on the other side of the opening in said split clampingmember, and a stud, said stud having a flat head secured between thebent back portion of the strip and the body portion thereof.

2. An exhaust manifold support pipe clamp having in combination, a splitclamping member adapted to surround and snugly engage a member of anexhaust manifold system, means for firmly securing the ends of saidsplit clamping member together, said means providing for diametricalexpansion and contraction of said split clamping member, and comprisinga resilient ring-like locking member hinged adjacent the opening in saidsplit clamping member, said locking member engaging a locking lug on theother side of said opening in said split clamping member, an offsetportion in said locking member, the length of said offset portion beingsubstantially the width of said locking lug, and said offset portionacting to prevent lateral movement of said locking member,,and' asupporting attachment secured to said split clamping member.

3. An exhaust manifold support pipe clamp having in combination, a splitclamping member comprising a strip adapted to surround and snugly engagea member of an exhaust manifold system, one end of saidstrip being bentback on itself to form an eye, the bent back portion of said strip beingsecured to said strip, a pin mounted in said eye, a resilient ring-likelocking member carried by said pin, a locking lug mounted adjacent theother end of said strip for engagement with said locking ring, and astud, said stud having a fiat head secured between the bent back portionof the strip and the body portion thereof.

ROSCOE I. MARKEY.

